Concentrator.



W.'L. & P. s. CARD.

GONGENTRATOR. APPLICATION FILED MAY 26, 1905.

LQQQQ64U, Patented Apr. 28,

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W. L. & F. S. CARD.

GONGENTRATOR.

AEELTCATIOH FILED MAY'EG, 1905 1 ggg ggg, Patented Apr. 28, 191%.

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5 r\ U C. W I w wiinaoou v W. L. & R's. GARD. CONGENTRATORi APPLICATION. FILED MAY 26, 1905.

1,094,649, Panama Apr. 28, 1914.

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snares Parana: @FEFEWE VJIIJJIAJJI L, CARD AND FRANK S. CARD, OF DENVER, COLORADO, ASSIGNORS TO THE CARD IQANUFAGTUBING COMPANY, OF DENVER, COLOR-ADO, A CORPURATION ()3? COLORADO.,

" CONCENTRATOR.

Specification of Letters Patent.

Patented Apr. as,

Application filed May 26 1905- Serial No. 262,417.

To all 20. mm it may concern:

Be 1t known that we, WILLIAM L. CARD and FRANK S. CARD, cltlzens ot the United States, residing at Denver, in the"county of ,pertains to make and use the same.

Our invention relates generally to the construction of multiplane decks for concentrators, whether the same be for main or auxiliary tables, singly or conjointly considered,

and has for its objects, first,-to retard and control the transverse flow of the pulp or material operated upon to insure proper stratification, and, second, to expedite the travel of metallic values longitudinally of the table whereby concentration is facilitated, and the capacity of the table increased with greater saving of values.

This invention pertains to that class of tables, commonly termed the Rittinger type, wherein the table is or may be adjustably inclined laterally, and, is reciprocated longi tudinally, the inclination in conjunction with the transverse flow of dressing water being for the purpose of separating the gangue from the metallic values and discharging the gangue at the lower or tailingsside of the table, and the reciprocation of the table being for the purpose of assisting in the strati: licationof the metallic values, and for efi'ecting the discharge of the values over the toe or front end of the table. As a rule tables of this type are in the form of a plane surface with slight lateral inclination and'consequent-1y of limited capacity, for the reason that such degree of inclination as would result in materially increasing the capacity of the table, would result, with a plane surface table, in an undue loss of values. To-im crease the inclination and resultant capacity of this class of tables without proportionate loss of values, the later tables of the Bittingcr type have added thereto longitudi-' nally disposed channels, produced either by strips or ritlles applied to, or grooves or channels formed in, the deck'cr surface of the table. In the operation of this type of table Whether plane, ritllcd, or grooved, the etlect of the conjoint action of the longitudinal vibration of the table and the transverse flow of dressing water on the pulp or material operated upon is to induce stratification of the metallic particles and a curved downward movement of the heavier partlcles from the upper side and rear end of the table toward the .ower side and front end of the table, the degree of inclination of the path of travel of the values beingdependent on the weight, size and shape of the respective particles; the heav er metallic particles, having the greater mt uientum imparted to them by the reciprotition of the table follow a path more nearly approaching the longitudinal axis of the table, while the lighter metallic particles take a course more or less downwardly curved and, are dis charged from the toe or front end of the table at different distances from the ta-ilings side ofthe table, or atleast such thereof as are not carried overthe lower or tailings side of the table with the ganguc by the dressing water.

Owing to the fact that the lighter metallic particles and the heavier coarser gangue particles of some shapes, as well as particles composed in part of gangue and in part of the metallic substance to be saved, are affected by the operation of the table in approximately the same manner, there is formed on the table a moving band of material of varying width which extends down ward diagonally from the feed side of the table to the lower front end thereof and which is comprised of the lighter particles of the values some coarser particles of gangue and particles of attached gangue and metallic values, such material being termed the'middlings and requiring further treatment or concentration.

Heretofore two methods of treating the middlings for the elimination of the gangue have been commonly resorted to','-'i iz., there'- tu-rn of the middlings to the teed box of the ell) I as

mon method of treating the iniddlings has been to feed them to an auxiliary table or device attached to and movable with the main table, but as in such cases the operating conditions on the auxiliary table, in respect to the inclination of the table and the character of the vibration, remain the same as those causing the formation of the middlings band on the main table, the results from such method have notvbeen considered economical or satisfactory in separating the metallic particles from the mixed massof middlings.

Experience with tables of the character above noted, that is to say, with tables wherein the deck is in effect a single plane, has shown that such lateral inclination of the table and such volume of dressing water as, combined, will bring clean metallics over the front, or concentrate end of the table, will at the sametirne cause the pulp, which is fed along the upper edge or feed side of the deck contiguous to the rear end of the table, to drift too far down toward the tailings discharge side of the table be fore a proper degree'ot Stratification is etfected, the result being that considerable portions of the nietallics or values are not freed or separated from the gangue in sulficient time to permit them to pass oil the end of the table andbe recovered with the concentrates, but are carried over the tailings side of the table and are lost with the gangue. The same conditions exist and similar results are obtained in the use of auriliary decks for the concentration oi rniddlings as at present constructed and} used in conjunction with the main table.

We have discovered as av result of care- ;tul and prblonged search and experiment, that it there be combined with a concentrator table of the Rittinger type, whether plane, ritlled, or channeled, or whether main or auxiliary, means for retarding and controlling the transverse movement of the materialoperated upon at the feed end and tailings side of the table, and for tacilitating the longitudinal travel of the metallics away from the feed end of the table, the,

capacity of the device will. be roportionately increased and the loss of va ues greatly diminished, and the combination of such means in or with a concentrator table, either main or auxiliary, embodies the principal feature of our invention.

In carrying out our invention we preferably construct the. table or deck of a plu rality out planes or surfaces oi constant area,

ose-nee said planes being inclined with respect to each other, and one or genera of said surfaces being inclined downtpirdly from the rear or feet end toward the front end and having a decreased transverse inclination toward the tailings discharge side of the table, whereby the side How of the pulp toward the tailings discharge side of the table is retarded and a component of forward flow toward the concentrates discharge'end of the table is established, thus ailording a longer time and, consequently, a greater op portunity for the stratification or separation ot the inetallics from the gangue to take place before the tailings discharge side ot the table is reached and at the same time assisting the longitudinal impulses of the table to quickly carryvthe valuable metallic particles which have settled upon the table surface forwardly toward the concentrates discharge end of the table, thus diminishing their liability ot'passing into the tailings, and such a construction embodies a further featureot our invention. "din order to adapt the gradient of such of said planes or surfaces of the-deck or table as are inclined torwardl downward toward the front end of the ta le to the varying character of the pulp or other material to be operated upon and to the varying volume of dressing waterrequired therefor, we preferably render said planes adjustable, or, in other Words, we preferably construct the multi plane deck with its planes relatively adjustable, and such. a construction embodies a further feature of our invention.

There are other, minor, features of invention embodied in certain combinations and elemental constructions, all as will hereinafter more fully appear.

in the drawings accompanying this specification and forming part of the same, Figure 1 is a perspective view of a main and an auxiliary table embodying our invention. Fig. 2 is a view in elevation of the front or concentrate discharge end or the main and auxiliary tables shown in Fig. 1. Fig. 3 i

is a plan view of the deck-frame of the main table. Fig. 4 is a plan view showing the sub-deck applied to the declcfraine.

Fig. 5 is a plan vlcw of the sub-deck as it appears when a covering or working face of rubber, linoleum or similar suitable material is superposed'thereon, the diagonal line indicating the line of tlexure. 'The appcar anoc of the deck when a channeled or rillied working surface of wood "or other suitable material is used is shown in the plan views, Figs. 1 and23. Fig. 6 is an elevation of the tailings side of the deck or table showing the manner. of trussing the same, the aux- I iliary deck being omitted. Fig. 7 is a transverse section of the deck frame on the line T-i', Fig. 3, looking toward the rear end of the table. Fig. 8 is a sectioxr nilnthe deck noeaeeo on L115 line 8-8, Fig. 3, looking in 'ersc direction or towardthe front end of the table. Fig. 9 is a detail sectional view of a portion of the table showing the manner of supporting the trussed side of the deck at its obtuse angled forward end. Fig. 10 is an elevation of the fear end of the main deck or table, showing the means for adjusting the inclination of one of the planes thereof. .Fig. 11 is an enlarged detail view of a portion of the tailings side of the main-deck or table. Figs. 12 and 13 are enlarged detail sectional views illustratg he manner of rrussing the tailingsside 1 of U table or deck and bracing it against vibration when adjust-ed. Fig, 14 1s a sectional detail view showing the means for adjusting the independently adjustable section of the main table or deck. Fig. 15 is a view of the tubular track rod and slide bearings of the table illustrating the method of supplying the lubricant to the said slide-bearings. Fig. 16 is a plan view of the deck-frame of the auxiliary deck. Fig. 17 is side elevation of the auxiliary deck or table looking from the tailings side and showing its connection with the main table or deck; Fig. 18 is a vertical transverse section of the auxiliary deck or table, and a portion of the main deck or table, looking from the front or concentrate discharge end. Fig. 19 is a vertical transverse section of the auxiliary deck or table and a portion of the main deck or table looking from thc'rear end of the table. Fig. .20 is an enlarged detail view of a portion of the middlings channel leading from the main to the auxiliary deck or table, and also of a portion of the longitudinally adjustable floor or partition board which divides the same from the upper or waste channel. Figs. 21 and 22 are diagrams of other forms of multiplane decks. Fig. 23 is a detached plan view of the channeled table shown in perspective Fig. 1 and Fig. 24 is a transverse sectionoi a per-on of the main table shown in Fi 523. illust atin I the arrangement of m s on the line 0 fiexure of the table super posed upon a linoleum top, as well as additi as to the lands along the same line in a channeled top in order to increase the depth of the channels along the line of llenure o h table.

Like symbols refer to like parts wherever they occur.

We will now proceed to describe the preferred form of our invention more fully so that others skilled in the art to which it appertains may apply our invention either in the form illustrated in the drawings or in such modification thereof as circumstances may dictate.

In conjunctionwith the concentrator decks hereinafter describedcthere will be employed a uitable foundation for the table, mechanism for adjusting the lateral inclination of the deck-frame or table as a whole, and mechanism for imparting a reciprocating movement to the deck-frame, or table as a whole, all of which may be of any approved form, the mechanism for adjusting the lateral inclination of the deck, however, preferably being such as is shown and described in our Patent #758,413, dated April 26, 1904, and the mechanism or head motion for imparting the reciprocating movement to the table being preferably either of the character shown and described in our Pa tent #777,858, dated December 20, 1904 or as shown and described in our application Serial N umber QGQAIS, filed of even date herewith (Patent Number 901 .736, issued December 29, 1908). Referring to the drawings; 1, 1 indicate the longitudinal timbers of a suitable foundation frame which may be cross-braced by distance blocks 2 and bolted together by tierods or cross-rods 3, one of said timbers or sills 1. 1, carrying side brackets for the fixed track-rod et which is adjacent to the .lower or tailings side of the table and the other of said timbers being pri'vided with vertically adjustable shoes for the adjustable track-rod 43 adjacent to the upper or feed side of the table.

On the under side of the deck-frame or table at proper intervals are secured suitable slide bearings by means of which the deck or table is slidably supported on said track-rods so as to be reciprocated longitudinally by suitable mechanism.

In our present constructim the trackrods l, are of tubular form (see Fig. 15); closed at one end by threaded plugs l and provided at the other with elbows 4; and a removable stopper e, the track rods thus constituting reservoirs for lubricants. The upper or tread surfaces of the track rods are perforated at intervals. as at 4, said perforations being connected by a groove or channel i and a feeder of felt k or other suitable capillary material, being inserted in said perforations and grooves in order to automatically and continuously supply the slide bearings 5 of the table with the lubricants. The slide bearingamay be provided upon its upper surface with the projection 5 which is adapted to be received in a concave depression in the under side of the member 5", an equalizing slide bearing be ing thus obtained.

M indicates the mechanismfor actuating the table or deck, the complement of such head mot-ion mechanism being preferably a reaction spring carried on,- or secured to, the under side ofthe table and adjustably anchored to the sub-frame 1 (as illustrated in our Patent #758,413, hereirbefore referred to), but any other well known means for like purpose. may be employed.

The deck-fra'me-is comprised of a plurality" of sections divided on a line or lines extending obliquely downward and forward from the feed side of the deck toward the concentrates discharge end thereof, said sections being relatively adjustable and adapt ed to support the plurality of planes constitoting the working face or concentrating surface of the table. In constructing such a deck-frame for the main table, we preterably secure to the stringers 6, 6 to the under side of which are attached the slide bearings 5, 5, a series of joists 7, 7, and arrange the earnest an angle to the feed side of the table, preferably at right angles to the oblique junction line of thesections comprising the table. This section of the decktrame may then be rendered rigid by the side and end strips '4', 7", 7. mental section of the deck frame, which rests adjustably upon and is carried by this primary reciprocating section, formed by arranging at right angles to the line of division of the sections, or at an angle to the tailings side of the table, a corresponding-series of joists 8, 8 which gradually decrease in length from the rear end of the table toward the front or concentrate end thereof, said joists, however, being preferably stag-v gered with respect to the joists 7, 7 (see Fig. 3) and overlapping the same. This section of the deck frame is rendered rigid and is boundby the side and end strips 8?, 8 and the tailings boards 8, 8 secured thereto.

In order to truss andstrengthen the tailings side of the movable section of the deck frame, which, in the construction chosen for purposes of illustration, receives no direct bracing from the stringers 6, 6, the tailings boards 8, 8 are grooved diagonallyas at 9*. (see Figsti. 11, and 12), and secured in position on the ends of joists 8, 8, the trussrods 9 having the heads 9 are inserted in. said grooves 9* and connected by the turn buckle 10, and bearing pins or posts 10 are inserted between the rods 9 and the tailings boards 8, 8 of the table. As a further means 0"? bracing this independently movable sectionof the deck and supporting the trussed side therefrom in such manner as to ulloiv sutficient pivotal movement to permit any required adjustment of the movable sectibn's, a hanger 8 (see Fig. 9) is employed, the upper end or arm of such hanger-being bolted or otherwise secured to the top of a joist 8 wherein it is countersunk, and the lower end or arm thereotextending under and being secured to the tailings board 8; there may be also provided a metal strap or straps 8 (see Figs. 3 and 13) having its end (3 bent at an angle and vertically slotted, said strap being bolted to one or more of the 'joists 8. as at 8, and to the tailings boards 8 R by the bolt 81 which has a square shank engaging the slot in the end portion 8 of the strap to prevent rotation.-

The comple- 'ing operated upon As a completion of the deck-frame sections, the boards 11 and 12 are secured to the respectii-e joists 7 and 8, (see Figs. 5 and 4), and the narrow strips 11 12 are applied to the joists at intervals of about oneeighth of an inch apart on lincs,parallel to the strips or boards 11 and 11 thus 'lorining the sub-deck or first covering of the dcclr frame. If desired the strips ll. and 12 may be connected at their junction by countersunk hinges, but such hinged connection is not essential, as the flexibility of the working surface, Whether the same he rubber, linoleum, or wood, will sulliee all equisite relative adjustments of the planes or sections.

Upon the sub-deck or first covering cab-ave specified, the final covering or worki' ll face of the table is applied; such coi erihg or working surface may be oi linoleum or rub er and may have rillles applied thereto, or, the same may be formed of rubber caving molded channels or riiiles therein. The sheet or covering may be secured to the sub-deck along the line of junction oi. the strips ll.

12 in any suitable manner and covering may be secured at the sides and edges of the deck by the retaining boards. Preferably, however, the workmg face of the table is formed of red wood boards about one half ing the relatively movable sections and the linoleum covering may be omitted. as the red wood will possess the required toughnessand flexibility to permit ol the proper relative adjustment of the planes.

In some instances the'depth oi the grooves i of the worlring surface of the table may be increased by building up the lands between. the channels, for example along and across the zone ottlenure of the table as indicated at 12 Figs. 1, 23, and 24, and in some cases plane surfaces in conjunction with a series of short 'ritlles, such as 12", which occupy the Zone of flexure and thus form limited channels increasing'the capacity of the table by arresting the side drift of the accumulation of metallics along the line of llexure, will be found a valuable modification, especially when very finely comminuted material is he- W indicates the dressing water supply .which. occupies the usual position at the feed side of the table parallel with the longitudinal axis and the line ott'i'eciprocation of the table so that the flow of dressing water is transverse and at right angles to the line of reciprocation of the table.

t will he noted on reference to Figs. 3, 4 and 23 of the drawings that the concentrates discharge end or frontend of the deck on the higher or feed side projects "forwardly as at a and that the concentrate discharge \vard from the the table so as over the concentrates discharge end-of the table to carry. or Wash the concentrates overthe end of the table, thus preventing bankmg ot the concentrates at this point and enabling the drip pipe, commonly employed for such purpose. to be dispensed with.

In the form or" deck shown in the principal figures of the drawings the division of the table has been made diagonally downrear end and feed side of to produce two triangular planes A and B of constant area, the former of which or may be fixed, and, for the purposes of this specification, is termed the dressing zone,'a11d the latter of which is in-- dependently movable and is termed the stratifying Zone, but it will be at once ev1- dentto a person skilled in the art, that, following the principles of construction hereinbetore laid down, the deck may,without further invention, be divided into any such number of relatively adjustable planes, constituting dressing and stratifying zones, as is consistent with the dimensions of the table, as indicated by diagrams Figs. 21 and In order to provide for the relative adjustment of the planes of the table, such zones. planes or sections as are independently adjustable, as for instance Zone B, are provided at any suitable point, as for instance at the rear-end adjacent to the tailing's side, with an arm or bracket 13 which projects outwardly over the rear end-piece 7 of the fixed deck frame. The arm or bracket 13 is perforated near its outer end for the free passage and rotation of an adjusting Screw ii. the latter being provided with a threaded nut 15 which supports said bracket and \vhichis prevented from rotating by meanS of a ip 13 on the outer end of said bracket. or in other suitable manner. The lower end of adjusting screw 14: is

.steizped in a socket plate 16 on the rear end-piece T" of the declct'raine, so that, when the adjusting screw 14 is rotated, the nut 15 being held against rotation, the movable deck-section will be raised or lowcred at one e ing to the direction in which the FlEW is rotated.- In l secti n or zone B rigid id to prevent any tremor t er than he proper can 7 of the deck name a plate 17 having at its upper end an elongated slot 17 through which passes a threaded bolt 18 that is secured to the adjustable section or plane B of the table. To the threaded bolt 18 is applied aclamp nut 18*, which may be loosenedwhen the independently movable section of the deck is to'be adjusted and which after adjustment, may be set home to clamp and hold said section rigidly in relation to the deck frame proper. If desired the connection between. the stringers 6, 6 and the end pi'ece 7 of th deck-frames may be strengthened at this point by means of angle plates 6 and through bolts '6, 6,

Attached to the main table on the tailings side and adj acent'to the front or concentrate end thereof is the auxiliary table which is adapted to receive and concentrate the. middlings from the main table's-aid auxiliary table in the present instance being shown as of similar construction to the main table in so far its deck is comprised of two relatively adjustable planes a, b, the junction line of which extends obliquely downvvarl froin'tlie feed side to the angle formed ly the meeting of the front or concentrate end and tailings side of the table. Therespecti'v'e' planes (4 and b of the auxiliary deck are of constant area, and may, if desired, be laid U upon miniature deck trames of the character and construction hereinbetore pointed out for the main table. They may be provided with similar means for independently adjust-ingand maintaining the zone I) in its inclinedposition, but, inasmuch as the auxiliary table is of limited dimensions, in lieu of such a construction the following may be adopted. Attached to the deck frame of the main table on the tailings side thereof and adjacent to the middlings discharge, is a board 19 (see Fig. 20) of suiiicient thickness to constitute a middlings channel 19 and a Waste, or tailings, channel 19 above the former, the channel 19 discharging as at 19* (see Fig. 17) upon the upper or "feed end of the auxiliary table and the latter,

l9". discharging back of and beyond the rear or feed end of the auxiliary table. Preferably these channels 19 and 19* are made by cutting the board obliquely downward, as shown in Fig. 20, thus providing an incline from the front or concentrate end of the table toward the rear or feed end of the table, such cut terminating in a shoulder 19 and the channels being closed laterally by a second or outer board 20 and being separated by a slidingpartition 20 which is movable in grooves in the board 20. By this means the sliding partition 20 can be longitudinally adjusted to increase or diminish the extent of the middlings inlet from the main table to accord with the width of the iniddlings zone thereon.

' 1 2? (see Fig. 16.) indicates the string ers, or frame strips, for the deck 01% the an v iliary table, said stringers being connected by the cross pieces 2222. The inner trains piece or stringer :21, may be bolted or otherwise secured to the boards 19 and 20 and, through them, to the deck-frame of the mam tables Upon the cross pieces 22 is laid the sub-deck or first covering 23, each section of which may be a single board of s itable dimensions, the same joining or meeting each other on a line eat/ending diagonally from the feed side of the table obliquely downward and forward. These sections constitute the dressing zone a and the stratifying zone 6, the section constituting the first named zone, a, being secured directly to the stringers 21 and cross pieces 22, While the other section, or zone Z), is free therefrom is independently adjustable, and may be connected to the fired zone a by hinges 24, or in other suitable flexible manner. lhe Working surface or cover 25 of the declr may be of linoleum or other suitable material tacked to the table along the line of uncticn of the zones a, Z) and secured at its edges in the usual or any approved manner The linoleum or equivalent Working surface is turned down" over the front end of the our:- iliary table to form discharge lip 25 and is raised at the rear or feed end of the table as at 25 to prevent overflow at the rear end of the auxiliary table. Along the tailings side of the auxiliary deck, a strip of linoleum 25 is secured to the board carrying the zone I) of the deck so as to overhang the inner upper edge of the tailings launder 2 8, the latter being secured to the outer strip or stringer 21.

in order to adj ust the pitch or inclination of the independently adjustable zone 22, a flat iron strip 2'? is secured to the lower rear corner thereof, said strip having a periorated projecting end through which passes a headed and threaded bolt 27% such bolt passing through'a coiled expansion spring 27* and through the perforated projecting end oi a second flat iron strip 28 secured to the outer stringer 21, and being provided with a thumb nut 28 by "which the expansion spring may be compressed or released to effect the required adjustment of the said zone 5. The rotation of the headed bolt 2? may be prevented by engagement with a lip at the extremity of the perforated. metal strip 27, or in any other suitable manner.

in order to supply the auxiliary table. or deck with dressing water, there may be provided at the f"' wardiend of the dressing water hole W oi; the main deck an anglo valve 29 for regulating the supply of ater to the auxiliary deck, said angle valve loctable and is arranged, by means of elbow or otherwise, to deliver into the dressing Water box 31 of said auxiliary deck, whence the Water escagies through perforations in the bottom oi: box 31 and is distributed in minor streahgsjalong the upper side oi the auxiliary deck.

The construction of the concentrator table and its adjuncts being substantiall; the character hereinbeiore pointed out, the longitudi al vibration and primary lateral. ad-

justment of the main frame of the table as.

Welles the method of feeding the pulp and supplying the dressin Water to the. table, may be such as heretotore practised, or any approved variation thereof that the partid ular material under treatment may require; but in any instance, those portions of the deck hereinbefore denominated the stratitying zone "and,the dressing zone will be relatively arranged so as to retard the transverse flow of the pulp across the table as inducedby the pitch of the dressing zone,

and Where the stratifying zone is itself independently adjustable longitudinally, as hereinbcfore pointed out, the degree of retardation oftlie side flow of the pulp to- Ward the tailings discharge and also the rapidity of the travel of the inetallics ward the concentrates discharge end o3? table may be progressively increased- 2G? cording to the reqnire nents of the material operated upon, by a proper manipulation of the same time accelerating the longitudinal movement oi the metallic constituents and facilitating the proper Stratification thereof Having thus described our invention We claim and desire to secure hr ll Patent is a L of the stra 1- the which meet on a diagonal line extend from the upper rearward corner the end of the table to the forward tail-s 1g 3r ed C01; ne'r at the concentrate discharge end oi" the table, and provided with riiiles or raised lands which fomi...intern1cdiate channels, the-rifles or raised lands being highest mediate of their ends and coincident with the said diagonal line, and. the chat 9 heing deepest intermediate of their oil.

2. A concentrator deck comprisedof plurality inclined planes Whichmeet in a extending ohlioue'ly dram the end,

and iced side oi' deck toward the "side and concentrate discharge end-theroalh we, I

that plane which is located at the rear end and tailings side of the deckbeing of less t 'ansverse inclination than the other and being inclined downwardly from the rear toard the front end of the table, and rilile." intersecting the line of junction of said planes.

3. The combination of a concentrator table or deck comprised of a plurality of transversely inclined relatively adjustable planes of CODFEZUli area, which meet in a line extending from the rear end of the table to; ward the front end thereof in a general (llagonal direction, nieans for simultaneously adjusting the transverse inclination of the said planes, and means for independently adjusting the transverse inclination of the plane adjacent to the tailings side of the table to retard in appropriate degree the transverse flow of pulp.

t. The combination with a concentrator table or deck comprised of a plurality of transversely inclined adjustable planes, each plane ha ving a constant area and saidpianes being divided from each other on lines extending downwardly and forwardly ob liqucly of the table or deck from the feed side thereof to the tailings side thereof, of means for independently adjusting the transverse inclination of the plane at the tailings discharge side of said deck to retard in appropriate degree the transverse flow of pulp, and means for siinliltaneously adjustin;- the transverse inclination of the several planes.

5. The conihiinition-with a concentrator table or deck comprised of transversely inclined adjustable planes, each of said planes having a constant area and said planes being divided from each other on lines extending downward obliquely of the table or deck, of means for simultaneously adjusting the transverse inclinations of said planes, means for independently adjusting-the transverse inclination of the plane adjacent to the tail- 'ing's side of the table to retard. in appropriate degree the transverse flow of pulp, and means for securing the respective planes in their adjusted positions. a

6. The combination With a concentrator table or deck comprised of a plurality of relativelyadjustable sections of constant area, said sections meeting -in a line extending from the rear end of the deck downwardly toward the front end thereof in a general diagonal d rection. of means for reciprocating tie deck; means for adjusting the lateral inclination of the deck as a whole and means mounted on the deck for tilting a lower section of the deck with respect to the adjacent hia'hcr deck section isaid lower deck s si'on being adjustable on an axis coin iding with lil intersection with the adjacent higher deck section to thereoy vary both the transverse and longitinlinalinclinations of the tilted section to retard the transverse flow of the pulp and simultaneously impart to the valuable particles thereof a motion toward the concentrate discharge end of the talole supplementing the motion of the particles in the longitudinal direction of the table induced by the reciprocation of said talole. i

'7. The combination with a concentrator deck comprised of a plurality of relatively tiltahlc sections of constant area said sec tions meeting in line extending from the rear end of the deck toward the front end thereof in a general diagonal direction, of means for reciprocating the deck, means for adj listing the lateral inclination of the deck as a whole. means for adjusting the relative lateral and longitudinal inclinations of the separate sections of the said deck to thereby retard the transverse flow of the pulp and simultaneously impart to the valuable particles thereof a motion toward the concentrate discharge end of the table supplementing the mot-ion of the particles in the longitudinal direction of the table induced by the reciprocation of said table, and means for securing, the relatively tiltalole sections in fixed relation after adjustment.

a. A concentrator deck having a plurality f transversely inclined sections w ich are divided from each other on a line extending obliquely downward and forward toward the concentrates discharge end of the deck, the section at the tailings discharge side of the deck having both a transverse and a longitudinal inclination to retard the transverse flow of the pulp and accelerate the longitudinal movement of the valuahleparticles thereover, and means for tilting said last named section to vary both its transverse and long tudinal inclination with respect to the adjacent section of the deck.

9. In a concentrator, the combination of a deck frame, means for adj listing the lateral inclination of the deck frame, a deck comprising a section at the feed side thereof, said section being attached to and adjustable with the deck frame, and a section at the railings side of the table adjustable with relation to said deck frame to retard in appropriate degree the t'ansverse flow of the pulp. said sections meeting in a line -which extends downwardly from the rear end of the deck toward the front end thereof in a general diagonal direction.

10. A concentrator deck comprised of a plurality of transversely inclined planes. which meet in a line extending downwardly froni'the rear end-of the deck toward the front end thereof in a general diagonal di-- rection, that one of said planes which is at the tailings Side of the deck being inclined downwardly from the rear toward the front or concentrates discharge end of the table to retard the transverse flow of the pulp and accelerate the longitudinal movement of the i 1 concentrator deck comprising a pluoi transversely inclined sections which meet in a line extending downwardly from the rear end of the deck toward the front or concenlrates ed thereof in a general die enal direction and which are movable at .l respect to each other to vary their relative trai erse and longitudinal inclinations, the section at the tailings side of the deck liming independently tiltahle and being inclined downwardly from the rear toward the front end of the table to retard the transverse i'iow ofwthe pulp and accelerate the longitudinal HIOYBXDBDDOli the valuable particles thereof toward the concentrate end of the table, and. rililes intersecting the line of junction of said planes,

13. A concentrator deck comprising a plurality relatively tiltable transversely inclined sections which meet in a line extending from the rear end of the deck toward the int or concentrates discharge end thereof in 'a general diagonal direction, the section at the tfilllllQfS side of the table being inclined downwardly toward the junction line of said sections to retard the transverse low of the pulp, and rilllcs of substantially equal lengths intersecting and crossing the line of junction of said planes.

A concentrator deck comprising a plurality of transversely inclined relatively adjustable sections which meet in a line catcnding downwardly from the rear end of the deck toward the front or concentrates discharge end thereof in a general diagonal direction, one of said sections having an inclination downward from the rear toward the front end of the deck and being adapted to be tilted independently of the adjacent section to thereby vary the relative transerse and longitudinal inclinations of said sections to retard the transverse flow of the pulp and accelerate the longitudinal movement of the valuable particles of the pulp toward the concentrate discharge end o1 the table,

z rniles intersecting the line of junctim so...

i concentrator deck comprising relascenario 15.. A concentrator deck comprisinga plurality of transversely inclined sections or" constant area each, said sections meeting in a lineextending from the rear end of the deck toward the front or concentrates discharge end thereof in a general diagonal direction and being tiltable with respect to each other to thereby vary their relative transverse inclination to retard in appropriate degree the transverse flow of the pulp, and longitudinally extending rifi les intersecting the line of junction of said sections.

16. A laterally tiltable concentrator deck comprised. of a plurality of independent planes which meet in a line extending from the rear toward the front or concentrates discharge end of the deck in a general diagonal direction, that plane of the deck which is adjacent to the rear end and tailings side *being', independently tiltable to vary its inclination or pitch both transversely and longitudinally to retard the transverse flow of the pulp and accelerate thelongitudinal movement of the valuable particles thereof toward the concentrate end.

ing a plane portion at thefecd sidewhich is inclined transversely as forms an angle with the said first named pcftion of the deck and means for reciprocating the deck longitudinally.

18. The combination with a concentrator deck which is tiltablealoout a rectilinear axis to vary its transverse inclination and which is formed with a concentrates discharge end makin an oblique angle with said axis, the angle formed between said axis and the deck end above said axis being obtuse and the angle formed between said axis and the deck end below said axis being acute, of means for supplying dressing water to the higher side of? said deck, means for feeding pulp to said deck'and meansfor reciprocating said table.

19.0ln a. concentrator table, the combination with a laterally tiltable deck frame and means for tilting sc" rams laterally, of a deck section on the feed side of the table which is movable with said sine, and a deck section on the tailings side oi' the table which is tiltahle with respect frame about a downwardly and forwardly J In testimony whereof we afiix our signaextending was, to thereby vary the relative tures, n presence of two subscriblng wlti0 transverse and longitudinal inclinations of nesses.

said deck sections to retard in appropriate WILLIAM L. CARD. '3 degree the transverse flow of the pulp and FRANK S. CARD.

accelerate the longitudinal movement of the Witnesses:

valuable particles thereof toward the con- EDWIN A. SPERRY,

centrate discharge end of the table. PHIDO. P. BUSH.

Copies 0! this patent may be obtained for five cents each, by afiflressing the Commissioner of Eatents,

' Washington, '1). C. 

